netdev - Re: [PATCH v3 2/2] net/core: dev_forward_skb() should clear skb

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Message-Id: <20120328.044614.1663135683027279533.davem@davemloft.net>
Date:	Wed, 28 Mar 2012 04:46:14 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	bcrl@...ck.org
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v3 2/2] net/core: dev_forward_skb() should clear skb_iif

From: Benjamin LaHaise <bcrl@...ck.org>
Date: Tue, 27 Mar 2012 21:55:44 -0400

> While investigating another bug, I found that the code on the incoming path
> in __netif_receive_skb will only set skb->skb_iif if it is already 0.  When
> dev_forward_skb() is used in the case of interfaces like veth, skb_iif may
> already have been set.  Making dev_forward_skb() cause the packet to look
> like a newly received packet would seem to the the correct behaviour here,
> as otherwise the wrong incoming interface can be reported for such a packet.
> 
> Signed-off-by: Benjamin LaHaise <bcrl@...ck.org>

Applied.
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